The Job Nobody Warned You About

Hardware founders plan development and fundraising carefully, then discover that half their week goes to something else entirely: suppliers, purchase orders, freight, and the one component that is suddenly on 40-week lead time. Supply chain is not a big-company problem — it is the thing that decides whether you hit the delivery date for your first customers or burn cash waiting. The good news is that most of the crises are preventable with early planning, no purchasing department, and no expensive software. A spreadsheet, maintained weekly, gets a startup surprisingly far.

Start With Knowing Exactly What the Product Is Made Of

Everything begins with a real bill of materials: every item, manufacturer part number, supplier, price at your quantity, lead time, and approved alternates. Without it you are not managing a supply chain, you are fighting fires. How to build and maintain one properly is covered in our bill of materials guide.

From that list, flag the critical items — anything with a single source, a long lead time, or end-of-life risk. A microcontroller that goes unobtainable can stop a startup for months, and the redesign it forces is rarely a drop-in swap. Two habits reduce this risk sharply: prefer parts with multiple manufacturers or pin-compatible siblings, and check the manufacturer's lifecycle status before you design a part in rather than after.

Five Principles That Hold a Young Supply Chain Together

  • Two sources for anything critical. Not always possible, but when an approved alternate is designed in from the start, a crisis becomes an inconvenience. That applies to the contract manufacturer too — identify a credible second even if you never activate it.
  • Safety stock calculated, not emotional. For cheap critical parts, holding a quarter or two of coverage costs almost nothing next to the cost of a stopped line. For expensive parts, balance cash against risk deliberately and write down the reasoning.
  • Staged purchase orders. Instead of one enormous order that freezes a design revision and ties up cash, place staged orders with options to extend. Minimums are negotiable more often than founders assume — see what MOQ is and how to negotiate it.
  • Transparency with suppliers. A supplier who knows your six-month forecast reserves capacity for you and warns you early about problems. Forecast accuracy matters less than forecast honesty.
  • Logistics priced as part of unit cost. Freight, duties, and insurance are not rounding errors — with current tariff schedules they can add a significant slice to landed cost. The mechanics are in import duties and tariffs, and the cash-flow trade-off between shipping modes in sea vs. air freight.

Mistakes That Repeat in Almost Every Startup

  • Buying components on price alone. The cheapest part is frequently the first one to vanish from global stock, and brokers filling that gap are where counterfeit parts enter.
  • Forgetting packaging. Cartons, inserts, foam, and labels are BOM items with their own lead times and their own minimums, and they hold up shipments as reliably as any chip.
  • No revision numbers or change log. When a defect appears in the field, you need to know which units are affected. Without revision control you recall everything or nothing.
  • Building on an optimistic sales forecast. Order to the likely scenario and design the capacity to expand to the optimistic one.
  • Skipping incoming inspection. A pallet of out-of-spec parts discovered during assembly stops a whole line; sampling at receiving is cheap insurance. The standard framework is explained in AQL inspection explained.

Calendar Risks Worth Marking Today

Two dates catch new founders every year. The first is the multi-week production shutdown around Chinese New Year, which effectively removes a chunk of the calendar and creates a crush on both sides of it — planning around it is covered in the Chinese New Year production shutdown. The second is the pre-holiday freight peak, when ocean capacity tightens and rates climb. Neither is a surprise; both are only a problem if your plan assumed a uniform year.

Three Numbers to Know by Heart

Even without an ERP system, three metrics give you real control:

  1. The longest lead time on the BOM. It determines how early you must commit to an order — and therefore how early the design must freeze.
  2. Total component cost per unit, and its trend across builds. If it is not falling as volume rises, something in the sourcing is wrong.
  3. Weeks of inventory on hand versus current sell-through. The single best early warning of both a stockout and a cash trap.

All three fit on one sheet reviewed weekly. Founders who look at it every week are almost never blindsided.

Grow in Stages

A supply chain for dozens of units bears little resemblance to one for thousands. Hand-buying parts and assembling in-house is entirely fine at the start; the pain arrives at the transition to real production runs, and that transition should be planned in advance — see from prototype to production. Just as important: design the product to be easy to source and build, because most supply chain problems are created at the design stage, not in the warehouse.

Design With Sourcing in Mind

At Projects House, component availability and manufacturability enter design decisions at the prototype stage, so a startup arrives at production with a supply chain it can rely on. More guides for hardware founders are in our startup guide. Tell us about your product through the contact form and we will review your BOM risk with you.